string strText = this.TextBox1.Text.Trim().Replace(System.Environment.NewLine, "<br>");
this.Label1.Text = strText;
this.TextBox2.Text = strText.Replace("<br>",System.Environment.NewLine);
//str = str.Replace("'", "''").Replace(">", ">").Replace("<", "<").Replace("and", "").Replace("exe", "");